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Old 02-28-2019, 01:04 PM   #1
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Air Suspension problems on RoadMaster chassis

Coach is a 38' 2001 Holiday Rambler Endeavor pusher on a RoadMaster chassis.

I have now had 4 instances where, when turning right or left on a rough street or road, coach starts "wallowing" and acts like I've blown a front tire. This has happened when turning a corner and accelerating (10-15 mph), on a round about at about 25 mph and yesterday on the hiway at about 40 mph. In all instances as soon as I have straightened out and come to a complete stop, I've checked the tires and can resume driving.

I have an idea that it is related to the air suspension, but have no idea of where to even start checking it out and the RV shops here in Western Colorado are clueless. Can anybody give me an idea where to get the manuals or info on this?

Thanks - Jim
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Old 02-28-2019, 01:34 PM   #2
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I would check for something broken that is shifting out of place when you turn and coming back into place once you are straight. There are torque arms with bushings etc and the mounts for the airbags.
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Old 03-01-2019, 08:40 AM   #3
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Check for worn steering components - especially tie rod ends. I have seen worn tie-rod cause the tire to wobble at a specific road speed which can only be stopped by stopping the vehicle (or sometimes hitting the brakes).

This wobble was just the first sign - before a (possible) complete failure and separation of the steering joint. You can visually check by looking at the steering joints while someone gently moves the steering wheel back and forth (just an inch or so to barely move the tire) you should see no movement of the joint as the tire moves.
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Old 03-01-2019, 12:30 PM   #4
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Roadmaster chassis "Wallowing"

Thanks to those who gave me a shout. I'll try those suggestions as soon as the snowbanks melt and I can get under the coach.

Thanks again for the replies.

Jim Stanbro - 2001 HR Endeavor with 2014 Jeep Cherokee or 1999 Jeep Grand Cherokee in tow depending on where we are heading.
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Old 03-15-2019, 02:13 PM   #5
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Thanks to those who gave me a shout. I'll try those suggestions as soon as the snowbanks melt and I can get under the coach.



Thanks again for the replies.



Jim Stanbro - 2001 HR Endeavor with 2014 Jeep Cherokee or 1999 Jeep Grand Cherokee in tow depending on where we are heading.


I recall seeing posts about wobble when flat towing the Jeep Cherokee. If you are towing your Jeep when your wallowing is occurring, it might be something to check out

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Old 03-30-2019, 09:07 PM   #6
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I recall seeing posts about wobble when flat towing the Jeep Cherokee. If you are towing your Jeep when your wallowing is occurring, it might be something to check out

Dick L 04 Imperial
Great point. Jeeps do get a front end shimmy under certain conditions and that would easily transfer into the coach.

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